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Darrick J. Wong
96de24c84a
Refactor the code that creates files with mixed block types that we feed into CoW tests to make sure that we can tiptoe around that kind of stuff. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
87 lines
2.6 KiB
Bash
Executable File
87 lines
2.6 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. 196
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#
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# Ensuring that copy on write in direct-io mode works when the CoW
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# range originally covers multiple extents, some unwritten, some not.
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# - Create two files.
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# - Reflink the odd blocks of the first file into the second file.
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# - directio CoW across the halfway mark, starting with the unwritten extent.
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# - Check that the files are now different where we say they're different.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2015, Oracle and/or its affiliates. All Rights Reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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seq=`basename "$0"`
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seqres="$RESULT_DIR/$seq"
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -rf "$tmp".* "$testdir"
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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. ./common/reflink
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# real QA test starts here
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_supported_os Linux
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_require_scratch_reflink
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_require_xfs_io_command "falloc"
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rm -f "$seqres.full"
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echo "Format and mount"
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_scratch_mkfs > "$seqres.full" 2>&1
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_scratch_mount >> "$seqres.full" 2>&1
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testdir="$SCRATCH_MNT/test-$seq"
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rm -rf $testdir
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mkdir $testdir
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echo "Create the original files"
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blksz=65536
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nr=64
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_weave_reflink_regular $blksz $nr $testdir/file1 $testdir/file3 >> $seqres.full
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_scratch_remount
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echo "Compare files"
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md5sum "$testdir/file1" | _filter_scratch
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md5sum "$testdir/file3" | _filter_scratch
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md5sum "$testdir/file3.chk" | _filter_scratch
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echo "directio CoW across the transition"
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"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 -b $((blksz * nr / 2)) $((blksz * nr / 4)) $((blksz * nr / 2))" "$testdir/file3" >> "$seqres.full"
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_pwrite_byte 0x63 $((blksz * nr / 4)) $((blksz * nr / 2)) "$testdir/file3.chk" >> "$seqres.full"
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_scratch_remount
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echo "Compare files"
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md5sum "$testdir/file1" | _filter_scratch
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md5sum "$testdir/file3" | _filter_scratch
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md5sum "$testdir/file3.chk" | _filter_scratch
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# success, all done
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status=0
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exit
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